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https://www.readbyqxmd.com/read/28231264/precision-engineering-for-prrsv-resistance-in-pigs-macrophages-from-genome-edited-pigs-lacking-cd163-srcr5-domain-are-fully-resistant-to-both-prrsv-genotypes-while-maintaining-biological-function
#1
Christine Burkard, Simon G Lillico, Elizabeth Reid, Ben Jackson, Alan J Mileham, Tahar Ait-Ali, C Bruce A Whitelaw, Alan L Archibald
Porcine Reproductive and Respiratory Syndrome (PRRS) is a panzootic infectious disease of pigs, causing major economic losses to the world-wide pig industry. PRRS manifests differently in pigs of all ages but primarily causes late-term abortions and stillbirths in sows and respiratory disease in piglets. The causative agent of the disease is the positive-strand RNA PRRS virus (PRRSV). PRRSV has a narrow host cell tropism, limited to cells of the monocyte/macrophage lineage. CD163 has been described as a fusion receptor for PRRSV, whereby the scavenger receptor cysteine-rich domain 5 (SRCR5) region was shown to be an interaction site for the virus in vitro...
February 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28231245/signalling-crosstalk-at-the-leading-edge-controls-tissue-closure-dynamics-in-the-drosophila-embryo
#2
Raphaël Rousset, Fabrice Carballès, Nadège Parassol, Sébastien Schaub, Delphine Cérézo, Stéphane Noselli
Tissue morphogenesis relies on proper differentiation of morphogenetic domains, adopting specific cell behaviours. Yet, how signalling pathways interact to determine and coordinate these domains remains poorly understood. Dorsal closure (DC) of the Drosophila embryo represents a powerful model to study epithelial cell sheet sealing. In this process, JNK (JUN N-terminal Kinase) signalling controls leading edge (LE) differentiation generating local forces and cell shape changes essential for DC. The LE represents a key morphogenetic domain in which, in addition to JNK, a number of signalling pathways converges and interacts (anterior/posterior -AP- determination; segmentation genes, such as Wnt/Wingless; TGFβ/Decapentaplegic)...
February 23, 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28230865/erbb4-signaling-stimulates-pro-inflammatory-macrophage-apoptosis-and-limits-colonic-inflammation
#3
Michael A Schumacher, Matija Hedl, Clara Abraham, Jessica K Bernard, Patricia R Lozano, Jonathan J Hsieh, Dana Almohazey, Edie B Bucar, Shivesh Punit, Peter J Dempsey, Mark R Frey
Efficient clearance of pro-inflammatory macrophages from tissues after resolution of a challenge is critical to prevent prolonged inflammation. Defects in clearance can contribute to conditions such as inflammatory bowel disease, and thus may be therapeutically targetable. However, the signaling pathways that induce termination of pro-inflammatory macrophages are incompletely defined. We tested whether the ErbB4 receptor tyrosine kinase, previously not known to have role in macrophage biology, is involved in this process...
February 23, 2017: Cell Death & Disease
https://www.readbyqxmd.com/read/28229610/coping-with-celiac-disease-how-heavy-is-the-burden-for-caregivers
#4
Francesca Ferretti, Federica Branchi, Bernardo Dell'Osso, Dario Conte, Luca Elli
BACKGROUND: Celiac disease (CD) is the most common chronic enteropathy demanding a lifelong gluten-free diet. OBJECTIVE: The aim of the study was to identify and estimate the subjective burden of caregivers of celiac patients. METHODS: A cross-sectional observational study was conducted during the regional meeting of the Italian Society for the Celiac Disease in April 2014. A written self-administered anonymous questionnaire enquired into caregivers' demographic profile, natural history of patients' disease and caregivers' self-reported degree of burden at the onset of symptoms (T0), at CD diagnosis (T1) and during follow-up (T2)...
February 23, 2017: Revista Española de Enfermedades Digestivas
https://www.readbyqxmd.com/read/28228550/interaction-of-phosphorylated-rab11-fip2-with-eps15-regulates-apical-junction-composition
#5
Lynne A Lapierre, Elizabeth H Manning, Kenya M Mitchell, Cathy M Caldwell, James R Goldenring
MARK2 regulates the establishment of polarity in MDCK cells in part through phosphorylation of serine 227 of Rab11-FIP2. We have now identified Eps15 as an interacting partner of phospho-S227-Rab11-FIP2 (pS227-FIP2). During recovery from low calcium, Eps15 localized to the lateral membrane, prior to pS227-FIP2 arrival. Later in recovery, Eps15 and pS227-FIP2 co-localized at the lateral membrane. In MDCK cells expressing the pseudophosphorylated FIP2 mutant, FIP2(S227E), during recovery from low calcium, Eps15 was trapped and never localized to the lateral membrane...
February 22, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28228349/identification-of-prdm-genes-in-human-corneal-endothelium
#6
Kostadin Rolev, G O'Donovan Dominic, Christiana Georgiou, Rajan Madhavan, Alexandra Chittka
Corneal endothelial cells (CECs) are essential for maintaining corneal stromal hydration and ensuring its transparency, which is necessary for normal vision. Dysfunction of CECs leads to stromal decompensation, loss of transparency and corneal blindness. Corneal endothelium has low proliferative potential compared to surface epithelial cells leading to poor regeneration of CEC following injury or age related decline in cellular density. The mechanisms which control proliferation and differentiation of neural crest derived CEC progenitors are yet to be clearly elucidated...
February 19, 2017: Experimental Eye Research
https://www.readbyqxmd.com/read/28228335/alterations-in-cardiac-autonomic-control-in-spinal-cord-injury
#7
Fin Biering-Sørensen, Tor Biering-Sørensen, Nan Liu, Lasse Malmqvist, Jill Maria Wecht, Andrei Krassioukov
A spinal cord injury (SCI) interferes with the autonomic nervous system (ANS). The effect on the cardiovascular system will depend on the extent of damage to the spinal/central component of ANS. The cardiac changes are caused by loss of supraspinal sympathetic control and relatively increased parasympathetic cardiac control. Decreases in sympathetic activity result in heart rate and the arterial blood pressure changes, and may cause arrhythmias, in particular bradycardia, with the risk of cardiac arrest in those with cervical or high thoracic injuries...
February 15, 2017: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/28227332/using-surface-electromyography-to-detect-changes-in-innervation-zones-pattern-after-human-cervical-spinal-cord-injury
#8
Babak Afsharipour, Milap S Sandhu, Ghulam Rasool, Nina L Suresh, William Z Rymer, Babak Afsharipour, Milap S Sandhu, Ghulam Rasool, Nina L Suresh, William Z Rymer, Milap S Sandhu, Babak Afsharipour, William Z Rymer, Nina L Suresh, Ghulam Rasool
Human spinal cord injuries (SCI) disrupt the pathways between brain and spinal cord, resulting in substantial impairment and loss of function. Currently, we do not have the ability to precisely quantify the "functional" level of motor injury. The aim of this study is to determine if high-density surface electromyography imaging (SEI) can be used to characterize the location and extent of the spinal lesion. SEI is a safe and non-invasive technique, which uses several electrodes to provide a map of muscle activity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226832/detection-of-compensatory-balance-responses-using-wearable-electromyography-sensors-for-fall-risk-assessment
#9
Mina Nouredanesh, Sunil L Kukreja, James Tung, Mina Nouredanesh, Sunil L Kukreja, James Tung, Mina Nouredanesh, Sunil L Kukreja, James Tung
Loss of balance is prevalent in older adults and populations with gait and balance impairments. The present paper aims to develop a method to automatically distinguish compensatory balance responses (CBRs) from normal gait, based on activity patterns of muscles involved in maintaining balance. In this study, subjects were perturbed by lateral pushes while walking and surface electromyography (sEMG) signals were recorded from four muscles in their right leg. To extract sEMG time domain features, several filtering characteristics and segmentation approaches are examined...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225256/analysis-and-control-of-chain-mobility-in-protein-hydrogels
#10
Peter B Rapp, Ahmad K Omar, Jeff J Shen, Maren E Buck, Zhen-Gang Wang, David A Tirrell
Coiled-coil domains can direct the assembly of protein block copolymers into physically crosslinked, viscoelastic hydrogels. Here we describe the use of fluorescence recovery after photobleaching (FRAP) to probe chain mobility in reversible hydrogels assembled from engineered proteins bearing terminal coiled-coil domains. We show that chain mobility can be related to the underlying dynamics of the coiled-coil domains by application of a 3-state "hopping" model of chain migration. We further show that genetic programming allows the effective mobility of network chains to be varied 500-fold through modest changes in protein sequence...
February 22, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28223370/the-lim-only-protein-fhl2-is-a-negative-regulator-of-tgf-%C3%AE-1-expression
#11
Jennifer Dahan, Florence Levillayer, Tian Xia, Yann Nouët, Catherine Werts, Martine Fanton d'Andon, Minou Adib-Conquy, Anne-Marie Cassard-Doulcier, Varun Khanna, Ju Chen, Thierry Tordjmann, Marie-Annick Buendia, Grégory Jouvion, Yu Wei
TGF-β1 is a master cytokine in many biological processes including tissue homeostasis, epithelial to mesenchymal transition and wound repair. Here we report that the four and a half LIM-only protein 2 (FHL2) is a critical regulator of TGF-β1 expression. Devoid of DNA-binding domain, FHL2 is a transcriptional co-factor that plays the role of co-activator or co-repressor depending on the cell and promoter contexts. We detected association of FHL2 with the TGF-β1 promoter, which showed higher activity in Fhl2(-/-) cells than WT cells in a reporter assay...
February 21, 2017: Molecular and Cellular Biology
https://www.readbyqxmd.com/read/28223336/variable-daxx-gene-methylation-is-a-common-feature-of-placental-trophoblast-differentiation-preeclampsia-and-response-to-hypoxia
#12
Boris Novakovic, Danièle Evain-Brion, Padma Murthi, Thiery Fournier, Richard Saffery
Placental functioning relies on the appropriate differentiation of progenitor villous cytotrophoblasts (CTBs) into extravillous cytotrophoblasts (EVCTs), including invasive EVCTs, and the multinucleated syncytiotrophoblast (ST) layer. This is accompanied by a general move away from a proliferative, immature phenotype. Genome-scale expression studies have provided valuable insight into genes that are associated with the shift to both an invasive EVCT and ST phenotype, whereas genome-scale DNA methylation analysis has shown that differentiation to ST involves widespread methylation shifts, which are counteracted by low oxygen...
February 21, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/28222777/identification-of-somatic-and-germ-line-dicer1-mutations-in-pleuropulmonary-blastoma-cystic-nephroma-and-rhabdomyosarcoma-tumors-within-a-dicer1-syndrome-pedigree
#13
Lorena Fernández-Martínez, José Antonio Villegas, Íñigo Santamaría, Ana S Pitiot, Marta G Alvarado, Soledad Fernández, Héctor Torres, Ángeles Paredes, Pilar Blay, Milagros Balbín
BACKGROUND: DICER1 syndrome is a pediatric cancer predisposition condition causing a variety of tumor types in children and young adults. In this report we studied a family with two relatives presenting a variety of neoplastic conditions at childhood. METHODS: Germ-line mutation screening of the complete coding region of the DICER1 gene in genomic DNA from the proband was performed. The presence of somatic DICER1 mutation and further alterations in driver genes was investigated in genomic DNA obtained from available tumor samples...
February 21, 2017: BMC Cancer
https://www.readbyqxmd.com/read/28221712/discovery-of-myh14-as-an-important-and-unique-deafness-gene-causing-prelingually-severe-autosomal-dominant-non-syndromic-hearing-loss
#14
Bong Jik Kim, Ah Reum Kim, Jin Hee Han, Chung Lee, Doo Yi Oh, Byung Yoon Choi
BACKGROUND: Pathogenic variants of MYH14 have been known to be associated-in either a syndromic or non-syndromic manner-with hearing loss. Interestingly, all reported cases to date of MYH14-related non-syndromic hearing loss with detailed phenotypes have demonstrated mild-to-moderate progressive hearing loss with postlingual onset. METHODS: In this study, targeted resequencing (TRS) of known deafness genes was performed to identify the causative variant in two multiplex families segregating AD inherited hearing loss...
February 21, 2017: Journal of Gene Medicine
https://www.readbyqxmd.com/read/28219749/behavioral-phenotypes-associated-with-mptp-induction-of-partial-lesions-in-common-marmosets-callithrix-jacchus
#15
Kimberley A Phillips, Corinna N Ross, Jennifer Spross, Catherine J Cheng, Alyssa Izquierdo, K C Biju, Cang Chen, Senlin Li, Suzette D Tardif
Parkinson's disease is a chronic neurodegenerative disorder with the core motor features of resting tremor, bradykinesia, rigidity, and postural instability. Non-motor symptoms also occur, and include cognitive dysfunction, mood disorders, anosmia (loss of smell), and REM sleep disturbances. As the development of medications and other therapies for treatment of non-motor symptoms is ongoing, it is essential to have animal models that aid in understanding the neural changes underlying non-motor PD symptoms and serve as a testing ground for potential therapeutics...
February 17, 2017: Behavioural Brain Research
https://www.readbyqxmd.com/read/28219675/tcf7l2-plays-crucial-roles-in-forebrain-development-through-regulation-of-thalamic-and-habenular-neuron-identity-and-connectivity
#16
Myungsin Lee, Jiyeon Yoon, Hobeom Song, Bumwhee Lee, Lam Tri Duc, Jaeseung Yoon, Kwanghee Baek, Hans Clevers, Yongsu Jeong
The thalamus acts as a central integrator for processing and relaying sensory and motor information to and from the cerebral cortex, and the habenula plays pivotal roles in emotive decision making by modulating dopaminergic and serotonergic circuits. These neural compartments are derived from a common developmental progenitor domain, called prosomere 2, in the caudal forebrain. Thalamic and habenular neurons exhibit distinct molecular profile, neurochemical identity, and axonal circuitry. However, the mechanisms of how their progenitors in prosomere 2 give rise to these two populations of neurons and contribute to the forebrain circuitry remains unclear...
February 17, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28219524/the-function-and-transcriptome-analysis-of-a-bzip-transcription-factor-cgap1-in-colletotrichum-gloeosporioides
#17
Xiaoyu Li, Yateng Wu, Zhiqiang Liu, Chenghui Zhang
Colletotrichum gloeosporioides is an important pathogen of anthracnose, which is able to infect numerous crops in tropical and subtropical regions, causing great economic losses. To investigate the fungal response to host-generated reactive oxygen species (ROS), we cloned and characterized the CgAP1 gene of C. gloeosporioides. CgAP1 encoded a bZIP transcription factor which had a bZIP DNA-binding domain and two cysteine-rich domains structurally and functionally related to Saccharomyces cerevisiae YAP1. Deletion of CgAP1 in C...
April 2017: Microbiological Research
https://www.readbyqxmd.com/read/28218652/steady-%C3%AE-ray-effects-on-the-performance-of-ppp-botda-and-tw-cotdr-fiber-sensing
#18
Isabelle Planes, Sylvain Girard, Aziz Boukenter, Emmanuel Marin, Sylvie Delepine-Lesoille, Claude Marcandella, Youcef Ouerdane
We investigated the evolution of the performances of Pulse Pre Pump-Brillouin Time Domain Analysis (PPP-BOTDA) and Tunable Wavelength Coherent Optical Time Domain Reflectometry (TW-COTDR) fiber-based temperature and strain sensors when the sensing optical fiber is exposed to two γ-ray irradiation conditions: (i) at room temperature and a dose rate of 370 Gy(SiO2)/h up to a total ionizing dose (TID) of 56 kGy; (ii) at room temperature and a dose rate of 25 kGy(SiO2)/h up to a TID of 10 MGy. Two main different classes of single-mode optical fibers have been tested in situ, radiation-tolerant ones: fluorine-doped or nitrogen-doped core fibers, as well as Telecom-grade germanosilicate ones...
February 17, 2017: Sensors
https://www.readbyqxmd.com/read/28217083/postnatal-loss-of-neuronal-and-glial-neurofascins-differentially-affects-node-of-ranvier-maintenance-and-myelinated-axon-function
#19
Anna M Taylor, Julia Saifetiarova, Manzoor A Bhat
Intricate molecular interactions between neurons and glial cells underlie the creation of unique domains that are essential for saltatory conduction of action potentials by myelinated axons. Previously, the cell surface adhesion molecule Neurofascin (Nfasc) has been shown to have a dual-role in the establishment of axonal domains from both the glial and neuronal interface. While the neuron-specific isoform of Neurofascin (NF186) is indispensable for clustering of voltage-gated sodium channels at nodes of Ranvier; the glial-specific isoform of Neurofascin (NF155) is required for myelinating glial cells to organize the paranodal domain...
2017: Frontiers in Cellular Neuroscience
https://www.readbyqxmd.com/read/28213520/cholesterol-up-regulates-neuronal-g-protein-gated-inwardly-rectifying-potassium-girk-channel-activity-in-the-hippocampus
#20
Anna N Bukiya, Serdar Durdagi, Sergei Noskov, Avia Rosenhouse-Dantsker
Hypercholesterolemia is a well-known risk factor for the development of neurodegenerative disease. However, the underlying mechanisms are mostly unknown. In recent years, it has become increasingly evident that cholesterol-driven effects on physiology and pathophysiology derive from its ability to alter the function of a variety of membrane proteins including ion channels. Yet, the effect of cholesterol on G protein-gated inwardly rectifying potassium (GIRK) channels expressed in the brain is unknown. GIRK channels mediate the actions of inhibitory brain neurotransmitters...
February 17, 2017: Journal of Biological Chemistry
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